WO2003053086A1 - Method for controlling a wireless multi-band and/or multi-wave wireless telecommunications device - Google Patents

Method for controlling a wireless multi-band and/or multi-wave wireless telecommunications device Download PDF

Info

Publication number
WO2003053086A1
WO2003053086A1 PCT/EP2001/015030 EP0115030W WO03053086A1 WO 2003053086 A1 WO2003053086 A1 WO 2003053086A1 EP 0115030 W EP0115030 W EP 0115030W WO 03053086 A1 WO03053086 A1 WO 03053086A1
Authority
WO
WIPO (PCT)
Prior art keywords
network
frequency bands
band
operating modes
accessible
Prior art date
Application number
PCT/EP2001/015030
Other languages
French (fr)
Inventor
Christian Ansorge
Original Assignee
Nokia Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Corporation filed Critical Nokia Corporation
Priority to EP01274990A priority Critical patent/EP1459579B1/en
Priority to AT01274990T priority patent/ATE513444T1/en
Priority to AU2002219204A priority patent/AU2002219204A1/en
Priority to PCT/EP2001/015030 priority patent/WO2003053086A1/en
Priority to US10/498,260 priority patent/US20050064869A1/en
Publication of WO2003053086A1 publication Critical patent/WO2003053086A1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to a method for controlling a multi-band and /or multi-mode telecommunications device, in particular to a method for controlling such device that is provided with an automatic operating mode selection mechanism.
  • a conventional triple band mobile telephone (Ti eport P7389, Motorola), is provided with a manual selection mechanism for selecting a first or a second set of frequency bands of the GSM (global system for mobile communications) standard.
  • the frequency bands according to GSM 900 and GSM 1800 or the frequency band according to GSM 1900 can be selected by the manual selection mechanism for operating this conventional mobile phone either in a dual band or a single band operating mode.
  • Another multi-band /multi-mode terminal is described in US 5,999,811.
  • the allowed or preferred band information i.e. information about the network that has to be primarily used is stored somewhere in the terminal, e.g. in memory portion provided on a subscriber identification mod- ule-(SIM)-card.
  • SIM subscriber identification mod- ule-(SIM)-card.
  • WO 95/01 070 discloses a multi network communication method for telecommunication in an environment which includes a number of different telecommunications networks, using a multi network terminal.
  • This multi network terminal itself detects those telecommunications networks to which it has access. After detecting available communications networks the multi network terminal itself decides in which of the accessible telecommunications networks communication shall take place on the basis of predetermined decision criteria.
  • US 5,504,803 is concerned with a method for automatic mode selection for a dual mode telephone handset for use in a cellular mobile telephone system and in a wireless telephone system.
  • the dual mode telephone handset of this system always tries to find the private wireless telephone system first. Only when know private wireless telephone system is found the handset starts to scan the frequency band or bands of the cellular system for an accessible network.
  • This object is achieved by a controlling method comprising the steps of searching for a communications network by scanning that frequency band or operation mode first that was used during the last successful operation, and continuing the search through all possible frequency bands or modes only in case that no accessible network was found in the group of frequency bands searched first.
  • the communications device is con- trolled for searching another accessible network first in the same frequency band or operation modes and, if no such network will be found, the search is continued through other possible frequency bands or modes.
  • the search for an accessible network is started in the frequency band or mode of the last successful connection to a network. This results in a reduction of time for detecting an available network and therefore in a reduction of power consumption since it is more probably that the user of the communications device has made no major geographical movements since the last operation. For exam- pie, if user do not leave Europe both the GSM 900 and the GSM 1800 are available so that even if the coverage of one network was lost he/she will be most probably in the coverage area of another network operating in accordance with the same standard.
  • frequency bands and/ or operating modes are grouped so that each group contains those of the frequency bands and/or operating modes only, that can exist in a single geographic area, wherein after detecting an accessible network further operation is restricted to those fre- quency bands and/ or operating modes that belong to the same group as the frequency band and operating mode used by the accessible network, as long as a network is available in spite of this restriction.
  • the communications device After the communications device is switched on it scans for pos- 5 sible networks to be connected to in that frequency band first that was successfully used during the last operation period. When an accessible network with successful service was found the device continues with only enabling those operating modes which were predefined to exist together with this first network. Other operating modes are barred as long as a service or network 10 out of the first group exist.
  • the search for an accessible communications 15 network is continued for all possible frequency bands and/ or operating modes starting with a frequency band and /or operating modes that does not belong to the group of frequency bands and /or operating modes that has been selected by the restriction.
  • the communications device loses the connection to a network completely the scanning process for searching an accessible network continues with searching networks in all possible frequency bands and/ or operating modes, wherein those frequency bands and/or operating modes are searched first that were excluded by the restriction.
  • a method for controlling a wireless multi-band, multi- do mode communications device, in particular a triple band, double mode mobile telephone comprises the first step S 10 of deciding whether or not the mobile telephone was switched on the very first time. If so in step S20 the search for a network in the frequency band of the GSM 900 and GSM 1800 standards is conducted. There after, it is decided in step S30 whether or not an accessible network was found. In case that the search of step S20 was successful the mobile phone will be operated in step S40 in a first mode, i.e. in a dual band mode using the frequency bands of GSM 900 and GSM 1800. In this first mode roaming and handover is performed in a way well known for dual band mobile telephones.
  • step S40 in the first mode in case that the link to the actual network gets lost due to losing coverage, i.e. when the user is leaving the coverage area of the accessed network, a new network is searched first in the used frequency band an then in the other of the group of two co-existing frequency bands according to GSM 900 and GSM 1800.
  • step S20 If the search of step S20 was not successful, the search for an accessible network is continued in the next possible frequency band, i.e. in the frequency band of GSM 1900 in step S70 thereafter it is decided in step S80 whether an accessible network was found in step S70. If no accessible network was found in step S70 the search is continued in step S20. However, if an accessible network was found in step S70 the operation of the mobile phone is continued in step S90 using a second mode, e.g. a single band mode using only the frequency band of GSM 1900. I.e. in case that the access to actual network got lost, searching for another accessible network will be performed only in the frequency band of GSM 1900.
  • a second mode e.g. a single band mode using only the frequency band of GSM 1900. I.e. in case that the access to actual network got lost, searching for another accessible network will be performed only in the frequency band of GSM 1900.
  • the restriction of the search area i.e. the restriction to one of a group of frequency bands is abolished and the search is continued through all possible frequency bands.
  • the search for a new ac- cessible network will be simply continued with the first searching step, i.e. with step S20.
  • step S45 since it was decided in step S45 that the frequency bands according to GSM 900 and GSM 1800 are not available it is more likely that an accessible network will be found in the frequency band of GSM 1900. Thus, the operating of the mobile phone is continued with searching an accessible network in the frequency band 1900.
  • step S 10 in case that a mobile telephone controlled according to the present invention that has been used at least one time, it is decided in step S 10 that the operating period will not be the very first one, so that the first or the second operating mode is selected according to the last operating mode used during the last operation period.
  • searching for an accessible network in step S20, and S70 is skipped and an accessible network is searched according to the operation modes of step S40 or step S90 in dependence on the frequency band and operating mode that was used during the last operation period.
  • a mobile telephone or another telecommunications device that can be operated not only in different frequency bands but also with different communication standards.
  • the advantages of the present invention become more and more evident in case that the number of possible operating modes, avail- able frequency bands and standards increases, so that not only dual-mode or triple-mode devices are used but also devices that can be used in a pluarlity of operating modes.
  • a device can either be a mobile telephone or any other wireless terminal, e.g. a data terminal for fixed or mobile usage.

Abstract

The present invention relates to a method for controlling a multi-band and/or multi-mode wireless device, that is provided with an automatic operating mode selection mechanism. To speed up the search for an accessible communications network and to simultaneously reduce power consumption, the method comprises the steps of searching for a communications network by scanning that group of frequency band or operating modes first that were used during the last successful operation, and continuing the search through other possible frequency bands or modes only in the case that no accessible network was found in the group of frequency bands or modes searched first.

Description

METHOD FOR CONTROLLING A WIRELESS MULTI-BAND AND/OR MULTI-WAVE WIRELESS TELECOMMUNICATIONS DEVICE
Description
The present invention relates to a method for controlling a multi-band and /or multi-mode telecommunications device, in particular to a method for controlling such device that is provided with an automatic operating mode selection mechanism.
Background of the invention
A conventional triple band mobile telephone (Ti eport P7389, Motorola), is provided with a manual selection mechanism for selecting a first or a second set of frequency bands of the GSM (global system for mobile communications) standard. In particular, the frequency bands according to GSM 900 and GSM 1800 or the frequency band according to GSM 1900 can be selected by the manual selection mechanism for operating this conventional mobile phone either in a dual band or a single band operating mode.
However, for selecting between operating modes that can be performed by this conventional mobile telephone, the user has to know which kind of networks he can expect in a certain geographic area or the user needs to try all possible operational modes until he finds a successful network connection. This is inconvenient, consumes time and power so that the autonomy of such a mobile telephone is reduced when it is powered by a battery.
Another multi-band /multi-mode terminal is described in US 5,999,811. In this terminal the allowed or preferred band information, i.e. information about the network that has to be primarily used is stored somewhere in the terminal, e.g. in memory portion provided on a subscriber identification mod- ule-(SIM)-card. This individual configuration is made according to the needs of the network operator to make sure that his revenue stays as wanted.
WO 95/01 070 discloses a multi network communication method for telecommunication in an environment which includes a number of different telecommunications networks, using a multi network terminal. This multi network terminal itself detects those telecommunications networks to which it has access. After detecting available communications networks the multi network terminal itself decides in which of the accessible telecommunications networks communication shall take place on the basis of predetermined decision criteria.
However, searching all accessible telecommunications networks prior to selecting one of them needs a rather long time and reduces the stand by time of this terminal if it is powered by a battery.
US 5,504,803 is concerned with a method for automatic mode selection for a dual mode telephone handset for use in a cellular mobile telephone system and in a wireless telephone system. The dual mode telephone handset of this system always tries to find the private wireless telephone system first. Only when know private wireless telephone system is found the handset starts to scan the frequency band or bands of the cellular system for an accessible network.
Summary of the invention
Accordingly, it is an object of the present invention to provide a method for controlling a wireless multi-band and/ or multi-mode communications device that uses an automatic operating mode selection mechanism, that speed up the search for an accessible communications network and simultaneously re- duces power consumption.
This object is achieved by a controlling method comprising the steps of searching for a communications network by scanning that frequency band or operation mode first that was used during the last successful operation, and continuing the search through all possible frequency bands or modes only in case that no accessible network was found in the group of frequency bands searched first.
According to the present invention information about that network or service is stored that was successfully contacted immediately before the last interruption of the connection either due to a loss of coverage or switching off the communications device. In the first case the communications device is con- trolled for searching another accessible network first in the same frequency band or operation modes and, if no such network will be found, the search is continued through other possible frequency bands or modes. Similarly, in the latter case after switching on the communications device the search for an accessible network is started in the frequency band or mode of the last successful connection to a network. This results in a reduction of time for detecting an available network and therefore in a reduction of power consumption since it is more probably that the user of the communications device has made no major geographical movements since the last operation. For exam- pie, if user do not leave Europe both the GSM 900 and the GSM 1800 are available so that even if the coverage of one network was lost he/she will be most probably in the coverage area of another network operating in accordance with the same standard.
To improve the operation of a multi-band and/or multi-mode communications device it is preferred that frequency bands and/ or operating modes are grouped so that each group contains those of the frequency bands and/or operating modes only, that can exist in a single geographic area, wherein after detecting an accessible network further operation is restricted to those fre- quency bands and/ or operating modes that belong to the same group as the frequency band and operating mode used by the accessible network, as long as a network is available in spite of this restriction.
This ensures that searching for a communications network will be conducted through those frequency bands and/ or operating modes that will be most probably available. Only in case that no accessible network can be found the search will be conducted through the other frequency bands and operating modes that can be use with the communications device in question. E.g. if the communications device was operated together with a network operating in accordance with the GSM 1800 standard and no other network could be found in the respective frequency band, the search will switch over to the frequency band of the GSM 900 standard that co-exists in Europe together with the GSM 1800 standard.
By grouping only those frequency bands and operating modes together that can exist in a single geographic area it is possible to avoid checking all interesting frequency bands and /or wireless standards in case that the link to the i actual network gets lost. Therefore, a power consumption and needed time can be reduced or at least limited to a reasonable amount.
In addition, after the communications device is switched on it scans for pos- 5 sible networks to be connected to in that frequency band first that was successfully used during the last operation period. When an accessible network with successful service was found the device continues with only enabling those operating modes which were predefined to exist together with this first network. Other operating modes are barred as long as a service or network 10 out of the first group exist.
According to a refinement of the present invention it is preferred that after abolishing the restriction of operation in case that no accessible network can be found in the selected group, the search for an accessible communications 15 network is continued for all possible frequency bands and/ or operating modes starting with a frequency band and /or operating modes that does not belong to the group of frequency bands and /or operating modes that has been selected by the restriction.
20 Accordingly, whenever the communications device loses the connection to a network completely the scanning process for searching an accessible network continues with searching networks in all possible frequency bands and/ or operating modes, wherein those frequency bands and/or operating modes are searched first that were excluded by the restriction.
O Ej
Brief description of the drawings
The invention will be explained in more detail hereinafter with reference to the accompanying drawing the only figure of which shows a simplified sche- 30 atic flow chart of the inventive method.
Detailed description of the preferred embodiments
As shown in the figure a method for controlling a wireless multi-band, multi- do mode communications device, in particular a triple band, double mode mobile telephone comprises the first step S 10 of deciding whether or not the mobile telephone was switched on the very first time. If so in step S20 the search for a network in the frequency band of the GSM 900 and GSM 1800 standards is conducted. There after, it is decided in step S30 whether or not an accessible network was found. In case that the search of step S20 was successful the mobile phone will be operated in step S40 in a first mode, i.e. in a dual band mode using the frequency bands of GSM 900 and GSM 1800. In this first mode roaming and handover is performed in a way well known for dual band mobile telephones.
In particular, during the operation of the mobile telephone in step S40 in the first mode in case that the link to the actual network gets lost due to losing coverage, i.e. when the user is leaving the coverage area of the accessed network, a new network is searched first in the used frequency band an then in the other of the group of two co-existing frequency bands according to GSM 900 and GSM 1800.
If the search of step S20 was not successful, the search for an accessible network is continued in the next possible frequency band, i.e. in the frequency band of GSM 1900 in step S70 thereafter it is decided in step S80 whether an accessible network was found in step S70. If no accessible network was found in step S70 the search is continued in step S20. However, if an accessible network was found in step S70 the operation of the mobile phone is continued in step S90 using a second mode, e.g. a single band mode using only the frequency band of GSM 1900. I.e. in case that the access to actual network got lost, searching for another accessible network will be performed only in the frequency band of GSM 1900.
Thus, in both operating modes a search through frequency bands that will be most probably not successful is prevented by restricting the search to those frequency bands that exists together with the frequency band of the actual network. However, after conducting a search through the allowed frequency bands it is checked in step S45 or S95 whether or not the search was successful, if so the operating mode of the mobile phone will not be changed.
Otherwise, the restriction of the search area, i.e. the restriction to one of a group of frequency bands is abolished and the search is continued through all possible frequency bands. In a most simple case the search for a new ac- cessible network will be simply continued with the first searching step, i.e. with step S20.
However, since it was decided in step S45 that the frequency bands according to GSM 900 and GSM 1800 are not available it is more likely that an accessible network will be found in the frequency band of GSM 1900. Thus, the operating of the mobile phone is continued with searching an accessible network in the frequency band 1900.
In a similar way, when a GSM 1900 network is no longer available the search for an accessible network will be continued in the GSM 900 frequency band in step S20.
Further, in case that a mobile telephone controlled according to the present invention that has been used at least one time, it is decided in step S 10 that the operating period will not be the very first one, so that the first or the second operating mode is selected according to the last operating mode used during the last operation period. Thus, in this case searching for an accessible network in step S20, and S70 is skipped and an accessible network is searched according to the operation modes of step S40 or step S90 in dependence on the frequency band and operating mode that was used during the last operation period.
Although the present invention as been explained in more detail in connec- tion with GSM standards only, it is also possible to use the present invention with a mobile telephone or another telecommunications device that can be operated not only in different frequency bands but also with different communication standards. The advantages of the present invention become more and more evident in case that the number of possible operating modes, avail- able frequency bands and standards increases, so that not only dual-mode or triple-mode devices are used but also devices that can be used in a pluarlity of operating modes. Furthermore, a device can either be a mobile telephone or any other wireless terminal, e.g. a data terminal for fixed or mobile usage.

Claims

Claims
1. A method for controlling a wireless multi-band and/or multi-mode communications device, that is provided with an automatic operating mode selec- tion mechanism, comprising the steps of searching for a communications network by scanning that goup of frequency bands or operating modes first that were used during the last successful operation, and continuing the search through other possible frequency bands or modes only in the case that no accessible network was found in the frequency band searched first, characterized in that frequency bands and /or operating modes are grouped so that each group contains those of the frequency bands and or operating modes only that can co-exist in a single geographic area.
2. The method according to claim 1, characterized in that after detecting an accessible network further operation is restricted to those frequency bands and/or operating modes that belong to the same group as the frequency band and operating mode used by the accessible network, as long as a network is available in spite of this restriction.
3. The method according to claim 2, characterized in that after abolishing the restriction of operation in case that no accessible network can be found in the selected group, the search for an accessible communications network is continued for all possible frequency bands and /or operating modes starting with a frequency band and/or operating modes that does not belong to the group of frequency bands and/ or operating modes that has been selected by the restriction.
PCT/EP2001/015030 2001-12-19 2001-12-19 Method for controlling a wireless multi-band and/or multi-wave wireless telecommunications device WO2003053086A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP01274990A EP1459579B1 (en) 2001-12-19 2001-12-19 Method for controlling a wireless multi-band and/or multi-wave wireless telecommunications device
AT01274990T ATE513444T1 (en) 2001-12-19 2001-12-19 METHOD FOR CONTROLLING A WIRELESS MULTI-BAND AND/OR MULTI-MODE TELECOMMUNICATIONS DEVICE
AU2002219204A AU2002219204A1 (en) 2001-12-19 2001-12-19 Method for controlling a wireless multi-band and/or multi-wave wireless telecommunications device
PCT/EP2001/015030 WO2003053086A1 (en) 2001-12-19 2001-12-19 Method for controlling a wireless multi-band and/or multi-wave wireless telecommunications device
US10/498,260 US20050064869A1 (en) 2001-12-19 2001-12-19 Method for controlling a wireless multi-band and/or multi-wave wireless telecommunications device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2001/015030 WO2003053086A1 (en) 2001-12-19 2001-12-19 Method for controlling a wireless multi-band and/or multi-wave wireless telecommunications device

Publications (1)

Publication Number Publication Date
WO2003053086A1 true WO2003053086A1 (en) 2003-06-26

Family

ID=8164733

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/015030 WO2003053086A1 (en) 2001-12-19 2001-12-19 Method for controlling a wireless multi-band and/or multi-wave wireless telecommunications device

Country Status (5)

Country Link
US (1) US20050064869A1 (en)
EP (1) EP1459579B1 (en)
AT (1) ATE513444T1 (en)
AU (1) AU2002219204A1 (en)
WO (1) WO2003053086A1 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006007218A1 (en) * 2004-06-30 2006-01-19 Motorola, Inc. Multiple mode scanning
EP1641292A1 (en) * 2004-09-27 2006-03-29 Research In Motion Limited Method and apparatus for efficient network scanning
EP1645144A2 (en) * 2003-07-10 2006-04-12 Motorola, Inc. Obtaining service when in a no-coverage area of a communication system
EP1734783A1 (en) * 2005-06-15 2006-12-20 Kabushiki Kaisha Toshiba Method and apparatus for wireless communication using location based service discovery
EP1858278A1 (en) * 2006-05-19 2007-11-21 Research In Motion Limited System and method for facilitating accelerated network selection in a radio network enviroment
EP1863313A1 (en) * 2006-05-19 2007-12-05 Research In Motion Limited System and method for facilitating accelerated network selection using a weighted network list
EP2129176A2 (en) * 2008-05-30 2009-12-02 Samsung Electronics Co., Ltd. Multiband mobile terminal and cell search method thereof
US7904083B2 (en) 2004-09-27 2011-03-08 Research In Motion Limited Method and apparatus for efficient network scanning
US7970361B2 (en) 2007-11-28 2011-06-28 Telefonaktiebolaget L M Ericsson (Publ) Frequency band recognition methods and apparatus
US8010105B2 (en) 2006-05-19 2011-08-30 Research In Motion Limited System and method for facilitating accelerated network selection using a weighted network list
US8428584B2 (en) 2005-07-01 2013-04-23 Research In Motion Limited System and method for accelerating network selection by a wireless user equipment (UE) device
EP1915006A3 (en) * 2006-10-20 2016-01-06 Samsung Electronics Co., Ltd. Apparatus and method for scanning frequency in mobile terminal

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040253952A1 (en) * 2003-06-10 2004-12-16 Rager Kent D. Communications service searching in multi-band wireless communications devices and methods
JP4447416B2 (en) * 2004-09-22 2010-04-07 株式会社エヌ・ティ・ティ・ドコモ Multiband mobile communication system and transmitter
JP2006094001A (en) * 2004-09-22 2006-04-06 Ntt Docomo Inc Mobile communication system, apparatus and method for allocating frequency band
US8527014B2 (en) * 2005-08-08 2013-09-03 Qualcomm Incorporated Sleep mode for wireless communication device during out of service operation
JP4503516B2 (en) * 2005-09-09 2010-07-14 株式会社ジェイデータ mobile phone
US7627325B2 (en) * 2006-04-28 2009-12-01 Freescale Semiconductor, Inc. System and method for controlling a wireless device
US7835712B1 (en) * 2006-12-19 2010-11-16 Palm, Inc. Apparatus and methods for providing multi-band operation in a mobile computing device
US20110014879A1 (en) * 2009-07-17 2011-01-20 Motorola, Inc. Customized antenna arrangement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5504803A (en) * 1991-11-25 1996-04-02 Matsushita Electric Industrial Co., Ltd. Method for automatic mode selection for a dual-mode telephone handset for use in a cellular mobile telephone system and in a wireless telephone system
US6223037B1 (en) * 1998-10-09 2001-04-24 Nokia Mobile Phones Ltd. Cell selection during loss of service in a telecommunications system
US6229996B1 (en) * 1997-12-12 2001-05-08 Nokia Mobile Phones Limited Method and apparatus for increasing a probability that a dual-band mobile station will acquire a desired autonomous system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5734980A (en) * 1995-01-31 1998-03-31 Ericsson Inc. Preferred system selection techniques for mobile terminals
US6298235B1 (en) * 1995-12-12 2001-10-02 At&T Wireless Services, Inc. Powered down selection of a preferable wireless communications service provider in a multi-service provider environment
JP3274337B2 (en) * 1995-12-27 2002-04-15 株式会社東芝 CDMA cellular radio system
US5999811A (en) * 1996-02-16 1999-12-07 Ericsson, Inc. Mobile telephone for roaming using dual mode/band equipment including SIM cards
US5751772A (en) * 1996-02-28 1998-05-12 Motorola, Inc. Method for locating a channel in a communication system
US5950130A (en) * 1997-03-18 1999-09-07 Sbc Technology Resources, Inc. Mobile station with intelligent roaming and over-the-air programming features
WO1999004589A1 (en) * 1997-07-17 1999-01-28 Northern Telecom Limited Method and system for solving cellular communications frequency planning problem
US6259917B1 (en) * 1998-12-09 2001-07-10 Sony Corporation Apparatus and method for deriving a current network location from previously visited networks and movements between the previously visited networks

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5504803A (en) * 1991-11-25 1996-04-02 Matsushita Electric Industrial Co., Ltd. Method for automatic mode selection for a dual-mode telephone handset for use in a cellular mobile telephone system and in a wireless telephone system
US6229996B1 (en) * 1997-12-12 2001-05-08 Nokia Mobile Phones Limited Method and apparatus for increasing a probability that a dual-band mobile station will acquire a desired autonomous system
US6223037B1 (en) * 1998-10-09 2001-04-24 Nokia Mobile Phones Ltd. Cell selection during loss of service in a telecommunications system

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1645144A4 (en) * 2003-07-10 2007-05-30 Motorola Inc Obtaining service when in a no-coverage area of a communication system
EP1645144A2 (en) * 2003-07-10 2006-04-12 Motorola, Inc. Obtaining service when in a no-coverage area of a communication system
WO2006007218A1 (en) * 2004-06-30 2006-01-19 Motorola, Inc. Multiple mode scanning
US7904083B2 (en) 2004-09-27 2011-03-08 Research In Motion Limited Method and apparatus for efficient network scanning
US8897774B2 (en) 2004-09-27 2014-11-25 Blackberry Limited Method and apparatus for efficient network scanning
EP1641292A1 (en) * 2004-09-27 2006-03-29 Research In Motion Limited Method and apparatus for efficient network scanning
CN100448313C (en) * 2004-09-27 2008-12-31 Rim移动研究有限公司 Method and apparatus for efficient network scanning
WO2006135099A1 (en) * 2005-06-15 2006-12-21 Kabushiki Kaisha Toshiba Method and apparatus for wireless communication using location based service discovery
EP1734783A1 (en) * 2005-06-15 2006-12-20 Kabushiki Kaisha Toshiba Method and apparatus for wireless communication using location based service discovery
US8428584B2 (en) 2005-07-01 2013-04-23 Research In Motion Limited System and method for accelerating network selection by a wireless user equipment (UE) device
US9155033B2 (en) 2005-07-01 2015-10-06 Blackberry Limited System and method for accelerating network selection by a wireless user equipment (UE) device
EP1858278A1 (en) * 2006-05-19 2007-11-21 Research In Motion Limited System and method for facilitating accelerated network selection in a radio network enviroment
US8010105B2 (en) 2006-05-19 2011-08-30 Research In Motion Limited System and method for facilitating accelerated network selection using a weighted network list
US8428586B2 (en) 2006-05-19 2013-04-23 Research In Motion Limited System and method for facilitating accelerated network selection in a radio network environment
EP1863313A1 (en) * 2006-05-19 2007-12-05 Research In Motion Limited System and method for facilitating accelerated network selection using a weighted network list
US9119139B2 (en) 2006-05-19 2015-08-25 Blackberry Limited System and method for facilitating accelerated network selection in a radio network environment
EP1915006A3 (en) * 2006-10-20 2016-01-06 Samsung Electronics Co., Ltd. Apparatus and method for scanning frequency in mobile terminal
US7970361B2 (en) 2007-11-28 2011-06-28 Telefonaktiebolaget L M Ericsson (Publ) Frequency band recognition methods and apparatus
EP2129176A2 (en) * 2008-05-30 2009-12-02 Samsung Electronics Co., Ltd. Multiband mobile terminal and cell search method thereof
EP2129176A3 (en) * 2008-05-30 2012-05-23 Samsung Electronics Co., Ltd. Multiband mobile terminal and cell search method thereof

Also Published As

Publication number Publication date
AU2002219204A1 (en) 2003-06-30
ATE513444T1 (en) 2011-07-15
US20050064869A1 (en) 2005-03-24
EP1459579A1 (en) 2004-09-22
EP1459579B1 (en) 2011-06-15

Similar Documents

Publication Publication Date Title
EP1459579B1 (en) Method for controlling a wireless multi-band and/or multi-wave wireless telecommunications device
KR100432462B1 (en) Method and apparatus for roaming using dual mode/band equipment including sim cards
US7489930B2 (en) Apparatus and method for multimode terminals
US6119003A (en) Methods and apparatus for performing automatic mode selection in a multimode mobile terminal
EP1872614B1 (en) Method, apparatus and computer program providing for rapid network selection in a multimode device
KR100762646B1 (en) Dual-mode phone for operating between defferent networks and operating method therein
JP4935942B2 (en) User device and control method
EP2200376B1 (en) System and method for efficient selection of wireless networks
EP2268085B1 (en) A method for automatically selecting network and a terminal thereof
US20020068574A1 (en) Network selection in a mobile telecommunications system
US6516188B1 (en) Method and apparatus for acquiring emergency service in a mobile radio communication system
US20040121781A1 (en) Wireless terminals that scan for alternate protocol systems responsive to terminal movement and methods of same
MXPA05006864A (en) Method, apparatus, and system for selecting a service provider system.
CN1650648A (en) Method for a radiotelephone to scan for alternate radiotelephone systems
JPH10234069A (en) Intelligent network searching multiplex mode telephone set
EP1197109A1 (en) Protocol utilization based on mobile country code
US5924038A (en) Method and apparatus to speed up autonomous system selection after call release
KR100784324B1 (en) Apparatus and method for idle current saving in mobile communication terminal
GB2420937A (en) A mobile radio communications device connecting to a network of a radio access technology (RAT)
JP2001211482A (en) Portable radio equipment of cellular network for voice and/or data transmission and its method
KR100584444B1 (en) Method for selecting cell in multi mobile terminal
KR101145922B1 (en) Network sellecting method for dual mode mobile communication terminal
US20040160918A1 (en) Methods, apparatus and computer program products for acquiring traffic channels using negative systems
WO2000019757A1 (en) Systems and methods for tracking of a private communication system subject to retuning
WO2001010150A1 (en) Communication system and dual-mode mobile station

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2001274990

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2001274990

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 10498260

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP